Any diaspora in any country is usually very serious about their traditions and their origin, sometimes more that those who were left behind in their native country. It's a natural desire to preserve what's left in a new and unfamiliar world. Ukrainian diaspora is well known for cherishing Ukrainian traditions and being as "Ukrainian" as possible (as well as Jews, for example).
Sometimes they try too hard, though. There was an incident last year or so. Some Canadian organization invited sick and orphaned children from Carpathian region of Ukraine for medical treatment and/or recreation, which was great and very generous of them. Except that there was one condition - no Russian speaking children. I guess they were in their right, but this kind of segregation still looked kind of bad.